Ratio control comprising a chamber for a first liquid passing therethrough and a member therein having a port for feeding a second liquid into the first liquid



May 11, 1948.

w. H. cooK 2,441,259 RATIO CONTROL COMPRISING A CHAMBER FOR A FIRSTLIQUID PASSING THERETHROUGH AND A MEMBER THEREIN HAVING A PORT FORFEEDING A SECOND LIQUID INTO THE FIRST LIQUID Filed Dec 6, 1943 2Sheets-Sheet 1 WILLIAM H. EUU1\ w. H. cooK RATIO CONTROL COMPRISING ACHAMBER FOR A FIRST LIQUID PASSING THERETHROUGH AND A MEMBER THEREINHAVING A PORT FOR FEEDING A SECOND LIQUID INTO THE FIRST LIQUID FiledDec. 6, 1943 2 Sheets-Sheet 2 Ell Patented May 11, 1948 RATIO CONTROLCOMPRISING A CHAMBER FOR A FIRST LIQUID PASSING THERE- THROUGH AND AMEMBER THEREIN HAV- ING A PORT FOR FEEDING A SECOND LIQ- UID INTO THEFIRST LIQUID I William H. Cook, Toledo, Ohio Application December 6,1943, Serial No. 513,134

This invention relates to definite predetermined control of proportionbetween different substances, more especially with liquids as to thedelivery of a very minor quantity into a flowing stream.

This invention has utility when incorporated in a slow speed injectorpump feeder or accessory for a main stream, as of water to be softened;or otherwise treated as to render potable; while as to petroleum orother substances, the very low fractional percentage of impregnation maybe to render it non-corrosive, as well as having to do with treatmentsin wide ranges of industrial processes.

Referring to the drawings:

Fig. 1 is a side View, with parts broken away, of an embodiment of theinvention in a sealed rotary driven unit; 7

. Fig. 2 is a plan view of the measuring unit. of i 1;

Fig. 3 is a bottom plan view of the upper member and the moving partstherein;

Fig, 4 is a top plan view of the rotary carrier for the reciprocatingmeasuring plunger of Fig. 3, showing the control way or cam in dottedlines; the plunger being at the inward throw limit position;

Fig. 5 is a view similar to Fig. 4, but with the plunger at withdrawnposition for full intake charge;

, Fig. 6 is a longitudinal section of an adjustable volume plungermeasure, wherein the speed of actuation may be a constant while thevariation in the device of Fig. 1 may be from speed change;

3 Fig. 7 is a view of the device of Fig. 6, with the plunger in fullyadjusted withdrawn -position. being the limit'opposite to the fullyexpelling position of Fig. 6;

Fig. 8 is a plan view of the invention embodiment of Fig. 6, as beingdirectly in the flow line, as is the showing in Fig. 1, while as shownin 6, it is accessory to and may impregnate aeollateral stream or line;and

Fig, 9 is a section on the line IX-IX, Fig.7, showing the location ofthe reciproca-ble'member in the housing therefor.

Fluid supply line i has a connection at a boss 2 with a housing member3. From the member 3, oppositely from the boss 2, there extends a second boss 4 to an outlet or delivery line or duct '5. The member 3provides a. chamber 6 having a cover or lid section I assembledtherewith by screws 8.

Centrally of the bottom side of the chamber 2 Claims. (Cl. 21040) 6 is athrust ball or step bearing 9 for an element I0 having a lower outwardflange H upon which rests a helical compression spring l2 as maintainedcentral and on the step bearing by a flange l3 rising from the floor orbottom side of the chamber 6.

The spring l2 as extending upward from the element ll normally maintainsa stem l4 spaced from'the element ll. Accordingly the spring 52yieldably thrusts a connector disk l5 against a seat IS on the lowerside of the lid section 1.

The disk IS on its upper side has a key I! at a seat IB to engage across slot of a complementary. connector member l9 of a driving shaft 20extending outward through a gland 2| on the lid section I.

The shaft 20, in practice is rotated in a definite ratio or proportionto the volume or flow rate of liquid delivered by the duct 1. A passageor duct 22 has a downward discharge port 23. The ports 23 and 24 arespaced an equal distance from the axis of the shaft 20. The port 24 isin the disk l5. Diametrically of the disk I5 is a way or'guide 25 to theport 24. At intervals in the rotation of thedisk l5, these ports 23,2-4, are in register. Coincident with such register period, a plunger 26having a packed gland 27, protrudes to have a pivotal connection 28 witha lever arm 29 having a fulcrum}!!! in a projection 3i 0 from the diskI5.

The free end of the arm 29 carries a roller 32 to ride in an endless wayhaving a concentric portion 33 holding the plunger 21 at the inwardlythrust limit position. This cam way from its 5 concentric portion 33 hasan outward portion 34.

As the roller 32 operates in the portion 34, the

plunger 2'! (Fig. 5) is drawn away from the port 24, and thereby effectsa drawing into thecylinder or bore 25 of a liquid supply from the port23. At the limit of this intake of a measured volume of liquid into thecylinder 25, the rotating disk 15, cuts off the port 23. This cut-offinterval has duration for the increased diameter concentric portion 35of the cam way 33; 34. As the roller 32 in the endless cam way 33, 34',35, 36, enters the portion 36 of shortening radius, the plunger 2'! isthrust toward the port- 24. The

\ disk l5 at this interval has brought the port 24 the full dischargeflow or expulsion due to the.

cam portion 36. The roller '32 in passing therefrom to the concentriccam portion33, cuts on further supply until registry a ain occursbetween the ports 23, 24. In practice, this cycle may occur at a rate ofsay ten to fifteen per minute. Other more rapid or more slow rate may beadopted to fit into the main line flow volume, or even as tofluctuations therein. Another factor may be the character of theingredient to be thus supplied by this unit.

For controlled definite speed reduction at a definite relative rate of.flow of a stream, there is provideda motor 38 having incorporated there:in a speed reduction for operating a crank pin 39 in a slot 40 of a stem4| having a non-binding transmitting connection 42 with a reciprocablemember 43. A main housing member orchannel 44 has a cover or lid 45assembled therewith by screws 46. An adjusting screw 41, regulates acompression helical spring 48 in its thrust or yieldable holding actionupon a carrier plate 49 hav ing rollers 50 providing an anti-frictionsupport or mounting for the member 43.

The treating liquid may be supplied by gravity flow to an intake whichat a limitof throw of the reciprocable member 43 in one direction, is inregister with an intake port 52 at the region of a bore, plunger way oi.cylinder 53in which is operable a plunger. 54. The plunger 54 extendsoppositely from the member 43 to the stem 4!. A gland 55 packs thecylinder 53, and therethru the plunger 54 extends and thence thru aguide or stop 56 toward an adjustable limit screw or abutment 51. At thelimit of thrust of the member 43 away from the port or intake. 5|, theplunger54 has its head 58 strike the abutment 51. This position issomewhat before the fulllimit of this direction of stroke for the member43, so that the plunger 54 is thrust toward the port 52, and therebyexpels a measured por-. tion of intake liquid from the cylinder 53 foroutflow by way of the port 52 and a'spill. groove -or duct59. Theadjustment of the abutment 51 determines the extent of evacuation ofliquid from the cylinder 53, say into a stream of fluid to undergotreatment. In this instance a chamber 50 in the-housing 44, 45, is not apart of the flow circuit.- 4 7 For adaptation as a part of a liquidstream, there may be an intake duct 5! and an outlet duct 62 to ahousing 63, otherwise generally similar to the housing 44, 45, exceptthat the stem M has a packing gland .64. Additionally, instead of thespill way being outward from thehousing, it is agrooved way 65 from thelid side of the member 43 spilling into the chamber 60. p

In each of the embodiments; it -is to be noted that there is disclosed ahousing, having therein yieldable means to thrust the piston-containingmember against a seat. 3 The piston containing member or cylinder hasasingle port for the substance in-drawing as thepiston moves todisplacing position. The timing of this relative movement of the pistonor plunger as to the cylinder or movable slide member is for intake atthe free flowing intake port. There is relative idle position for theplunger as to the cylinder in transit from the intake port to thedischarge minor cross-section discharge port, where a squirt-effectingout-flow may be had of the intake charge into the stream to beimpregnated and as flowing at the controlled or uniform rate as to thespeed of this injector pump device. The efiective tight sealing of themovable piston i carrying or cylinder member as to the housing, is dueto the yieldable thrusting of such member as rotatable or reciprocable.The smooth or flat facing seat cooperation is of lap finish nicety andin practice has been chrome plated to retain "and hold such facesmoothness as efiective sealing. Again it is to be noted that in theinjector pump operation incidental to the embodiments of the devicesherewith, the substance charged has no exposure nor leakage in transitthru the feed pump. There is accordingly entire elimination of qualitydisturbance of the substance, as well as avoidance ofoxidatiomthickening, or other departure from the predeterminedcharacteristics and quality as well as quantity for handling and theratio therefor. The stream to be treated has a known flow rate orvolume, and the speed of operation of the injector can be set in steptherewith for the ratio required as responding to the situationpresented. A flash boiler feeder isutility for the device herein.

The functioning for a measured flow as to a major stream is efiective asa measured ratio control either for introducing or sampling as to themajor stream. To effect the latter end, reversal of operation directionmay be had. A normal relatively slow speed of operation has beendiscussed for the recurrence of the pump or plunger cycle, of which butone is shown per rotation. It is to be understood that a multiplethereof is achieved at the retained slower speed, instead of a higherdrive rate. The variant volume of course may be as to the major streamvariation, or be checked for a constant therewith.

A factor in the sealing, especially as the cylinder is immersed in thestream, is that the pressure of the flowing liquid in. the stream has, apacking influence against seepage or leakage away from the ports.whether in or out of registry for any flow over the sealing face. Thesubstance handled may, as away from the air, have its fluiditymaintained against becoming gummy. While so kept thin and fluid,notwithstanding the pressure holdih of the cylinder member against theported housing, anti-friction sealing film of non-leakage flow maylubricate the lapfinish smooth working faces, in their wear-infunctioning for retained tightness of fitting in shifting. The springmeans serve initially to place the parts in cooperative relation andeliminate any lifting clear should there be a build up of pressure atintake or exhaust which might tend to disturb. the fitting balance. Theflexibility or relative-rock-permitting connection between the cylindermember and its actuator have value in practice in thereby avoiding anydriving tendency which might tend to cramp or bind to disturb the closeregistry.

What is claimed and it is desired to secure by Letters Patent is:

1. Apparatus of the class described comprisingv a housing having achamber therein, inlet and'outlet ports in the housing for a, flowingstream, means for supplying a second substance to the housing, arotatable disk in the chamber engaging a wall thereof, yieldable meansfor maintaining the disk in engagement with the chamber wall, a port inthe chamber wall connected with the second substance supply and spacedfrom the axis of rotation of the disk, 3 port in the disk spaced fromthe axis of the disk, a spillway groove in the chamber wall spaced fromthe first mentioned port and spaced from the axis of the disk, saidports and groove being spaced the same distance from the axis of thedisk, a diametrically located bore in the disk and connected with saidsecond mentioned port, a plunger in said bore, a lever having one endpivotally connected with the disk and a roller on the other end of thelever, a cam surrounding the axis of the disk located in the chamberwall and having a portionconcentric with said axis, an outwardlyextending portion from said concentric portion and anupwardly extendingportion to the concentric portion, said roller adapted to engage saidcam, a connection between said plunger and said lever whereby theplunger withdraws the second substance into the bore as the rollerpasses through the outwardly extending portion and discharges the secondsubstance thru the groove into the chamber as the roller passes throughthe inwardly extending portion.

2. For measured control apparatus for a flowing stream of a firstsubstance; means for applying a second substance to the apparatus, saidmeans including a housing providing a chambet, a relatively movablemember in the chamber engaging a wall thereof, yieldable means formaintaining the member in engagement with the chamber wall, a first portin the chamber wall connected with the second substance supply means,said member having a second port toward the first port wall of thechamber, said chamber having a spillway groove for said second substancedelivery to the apparatus, said groove being spaced from said firstport, the location of said first and second ports and groove being suchthat, upon said relative movement of the member as to the housing wall,the second port may have alternate register with the first port andgroove, a bore in the member connected with the second port, "a plungerin said bore, relative movement efiecting actuating means coactingbetween the member and housing providing connection between the plungerand member whereby the plunger withdraws the second substance into thebore during the register location between the first and second ports anddischarges from the bore said second substance during the register ofthe second port with said groove.

WILLIAM H. COOK.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 354,762 Andrews Dec. 21, 1886434,392 Hyatt Aug. 12, 1890 951,397 Hill Mar. 8, 1910 1,159,611 SundhNov. 9, 1915 1,289,716 Fenchelle Dec. 31, 1918 1,295,211 Riedler Feb.25, 1919 1,401,145 Everson Dec. 27, 1921 1,726,083 McLaughlin et a1.Aug. 27, 1929 1,794,946 Crain Mar. 3, 1931 1,906,779 Von Kalmann May 2,1933 1,991,235 True et al. Feb. 12, 1935 2,011,165 Steiner Aug. 13, 19352,061,144 DeStoutz Nov. 17, 1936 2,069,651 Ferris Feb. 2, 1937 2,174,784Formhals Oct. 3, 1939 2,218,393 Corydon Oct. 15, 1940 Certificate ofCorrection Patent No. 2,441,259. May 11, 1948. WILLIAM H. COOK It ishereby certified that error-s appear in the printed specification of theabove numbered patent requiring correction as follows: Column 5, line17, claim 1, for the word upwardly read inwardly; hnes 28 and 29, claim2, for applying read suplying; and that the said Letters Patent shouldbe read with these corrections therein that the same may conform to therecord of the case in the Patent Oflice.

Signed and sealed this 29th day of June, A. D. 1948.

[IIAL] THOMAS F. MURPHY,

Assistant Oowmz'ssz'mr of Patents.

